Inflammation fueling atrial fibrillation substrate: seeking ways to "cool" the heart

Area of Science:

• Cardiology
• Immunology
• Pathophysiology

Background:

• Atrial fibrillation (AF) is a prevalent chronic arrhythmia linked to significant morbidity and mortality.
• Known risk factors for AF, such as hypertension, diabetes mellitus, and heart failure, share pathophysiologic connections with inflammation.
• Existing research, including experimental, epidemiological, and clinical studies, suggests inflammation is involved in AF pathogenesis.

Purpose of the Study:

• To review and synthesize current evidence supporting the "inflammatory" hypothesis of AF pathophysiology.
• To explore potential therapeutic strategies targeting inflammatory pathways in AF.

Main Methods:

• Review of experimental, epidemiological, cohort observational, and clinical trial data.
• Analysis of biomarker and inflammatory mediator measurements.
• Consideration of atrial biopsy findings.

Main Results:

• Multiple study types indicate a significant role for inflammatory processes in the induction and perpetuation of AF.
• Biomarker data and atrial biopsies provide insights into the relationship between inflammation and AF.
• Despite extensive evidence, the precise link between inflammation and AF remains incompletely defined.

Conclusions:

• Inflammation is a critical factor in the pathophysiology of atrial fibrillation.
• Targeting inflammatory pathways represents a promising therapeutic avenue for managing AF.